Like some of the posters above, I dress up for the occasion, not for the kilt. I, too, wear a kilt whenever I can, and have taken to taking morning walks in them, even if for only a half hour or so. With those, I am certainly in a t-shirt and some sort of hat, either a flat cap or green BDU cap, and hiking boots. I may throw on some hose and flashes, if I feel the urge. But, if I am going to go to dinner at a nice place, I will dress up and bit and put on a nice shirt and shoes. A tie, probably not, but I won't be in flip-flops at all.